The Addition of Explicit Congestion Notification (ECN) to IP
E325862
The Addition of Explicit Congestion Notification (ECN) to IP is an IETF standard (RFC 3168) that specifies how IP and TCP can signal and respond to network congestion without relying solely on packet loss.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T3081774 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: The Addition of Explicit Congestion Notification (ECN) to IP Context triple: [RFC 3168, title, The Addition of Explicit Congestion Notification (ECN) to IP]
-
A.
QUIC Loss Detection and Congestion Control
QUIC Loss Detection and Congestion Control is an IETF specification that defines how the QUIC transport protocol detects packet loss and manages congestion to ensure efficient and reliable data transmission on the internet.
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B.
Classless Inter-Domain Routing
Classless Inter-Domain Routing (CIDR) is an IP addressing and routing scheme that replaces traditional class-based networks to enable more efficient allocation of IP address space and improved route aggregation on the internet.
-
C.
Time-Sensitive Networking
Time-Sensitive Networking is a set of IEEE 802 Ethernet standards that enable deterministic, low-latency, and highly reliable communication for real-time applications such as industrial automation, automotive, and professional audio/video.
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D.
Real-time Transport Control Protocol
Real-time Transport Control Protocol (RTCP) is a companion protocol to RTP that provides out-of-band control, quality-of-service feedback, and synchronization for real-time audio and video streams over IP networks.
-
E.
IEEE 802.1Qat stream reservation protocol standard
The IEEE 802.1Qat stream reservation protocol standard defines mechanisms for reserving network resources to support time-sensitive audio and video streams with guaranteed quality of service over Ethernet networks.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: The Addition of Explicit Congestion Notification (ECN) to IP Target entity description: The Addition of Explicit Congestion Notification (ECN) to IP is an IETF standard (RFC 3168) that specifies how IP and TCP can signal and respond to network congestion without relying solely on packet loss.
-
A.
QUIC Loss Detection and Congestion Control
QUIC Loss Detection and Congestion Control is an IETF specification that defines how the QUIC transport protocol detects packet loss and manages congestion to ensure efficient and reliable data transmission on the internet.
-
B.
Classless Inter-Domain Routing
Classless Inter-Domain Routing (CIDR) is an IP addressing and routing scheme that replaces traditional class-based networks to enable more efficient allocation of IP address space and improved route aggregation on the internet.
-
C.
Time-Sensitive Networking
Time-Sensitive Networking is a set of IEEE 802 Ethernet standards that enable deterministic, low-latency, and highly reliable communication for real-time applications such as industrial automation, automotive, and professional audio/video.
-
D.
Real-time Transport Control Protocol
Real-time Transport Control Protocol (RTCP) is a companion protocol to RTP that provides out-of-band control, quality-of-service feedback, and synchronization for real-time audio and video streams over IP networks.
-
E.
IEEE 802.1Qat stream reservation protocol standard
The IEEE 802.1Qat stream reservation protocol standard defines mechanisms for reserving network resources to support time-sensitive audio and video streams with guaranteed quality of service over Ethernet networks.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
IETF standard
ⓘ
RFC ⓘ |
| abbreviation | ECN ⓘ |
| area | Transport ⓘ |
| benefit |
better support for real-time and interactive applications
ⓘ
improved network performance under congestion ⓘ reduced packet loss during congestion ⓘ |
| category | Standards Track ⓘ |
| definesCodepoint |
Congestion Experienced (CE) codepoint
ⓘ
ECN-capable Transport (ECT) codepoint ⓘ ECT(0) codepoint ⓘ ECT(1) codepoint ⓘ Not-ECT codepoint ⓘ |
| definesField |
ECN bits in IPv4 header
ⓘ
ECN bits in IPv6 header ⓘ ECN field in IP header ⓘ |
| definesFlag |
Congestion Window Reduced (CWR) flag in TCP header
ⓘ
ECN-Echo (ECE) flag in TCP header ⓘ |
| definesInteractionWith |
Active Queue Management mechanisms
ⓘ
Random Early Detection ⓘ
surface form:
Random Early Detection (RED)
|
| definesMechanism |
The Addition of Explicit Congestion Notification (ECN) to IP
self-linksurface differs
ⓘ
surface form:
Explicit Congestion Notification
|
| extendsField |
DS field in IP header
ⓘ
Differentiated Services field ⓘ |
| mechanism |
feedback of congestion information via TCP header flags
ⓘ
use of ECN bits in IP header to indicate congestion state ⓘ |
| publishedBy |
Internet Engineering Task Force
ⓘ
surface form:
IETF
Internet Engineering Task Force ⓘ |
| purpose |
allow TCP senders to reduce sending rate in response to congestion marks
ⓘ
enable routers to mark packets instead of dropping them under incipient congestion ⓘ signal network congestion without relying solely on packet loss ⓘ |
| relatedConcept |
congestion control
ⓘ
end-to-end congestion notification ⓘ queue management in routers ⓘ |
| replacesField | Type of Service field in IPv4 header ⓘ |
| requiresBehavior |
TCP sender reduces congestion window when receiving ECN-Echo indications
ⓘ
TCP sender sets CWR flag after reducing congestion window ⓘ routers mark CE on ECN-capable packets when experiencing incipient congestion ⓘ |
| RFCNumber | RFC 3168 ⓘ |
| specifiesFor |
IP end hosts
ⓘ
IP routers ⓘ IPv4 ⓘ IPv6 ⓘ Transmission Control Protocol ⓘ
surface form:
TCP
|
| status | Proposed Standard ⓘ |
| title | The Addition of Explicit Congestion Notification (ECN) to IP self-link ⓘ |
| updatesProtocol |
IP
ⓘ
Internet Protocol ⓘ Transmission Control Protocol ⓘ
surface form:
TCP
Transmission Control Protocol ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: The Addition of Explicit Congestion Notification (ECN) to IP Description of subject: The Addition of Explicit Congestion Notification (ECN) to IP is an IETF standard (RFC 3168) that specifies how IP and TCP can signal and respond to network congestion without relying solely on packet loss.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Explicit Congestion Notification
The Addition of Explicit Congestion Notification (ECN) to IP
→
title
→
The Addition of Explicit Congestion Notification (ECN) to IP
self-link
ⓘ
The Addition of Explicit Congestion Notification (ECN) to IP
→
definesMechanism
→
The Addition of Explicit Congestion Notification (ECN) to IP
self-linksurface differs
ⓘ
this entity surface form:
Explicit Congestion Notification
this entity surface form:
A Proposal to add Explicit Congestion Notification (ECN) to IP
this entity surface form:
Explicit Congestion Notification
this entity surface form:
ECN-Capable Transport (ECT)
this entity surface form:
Explicit Congestion Notification
this entity surface form:
Explicit Congestion Notification for IP and TCP
this entity surface form:
Explicit Congestion Notification
subject surface form:
RFC 3168
subject surface form:
RFC 3168
this entity surface form:
Explicit Congestion Notification for IP
Active Queue Management
→
relatedTo
→
The Addition of Explicit Congestion Notification (ECN) to IP
ⓘ
this entity surface form:
Explicit Congestion Notification
Random Early Detection
→
canBeCombinedWith
→
The Addition of Explicit Congestion Notification (ECN) to IP
ⓘ
this entity surface form:
Explicit Congestion Notification
this entity surface form:
TCP and Explicit Congestion Notification